/*旋转木马*/
.merry-go-round {
    position: relative;
    width: 1000px;
    margin: 50px auto;
    height: 400px;
}
.merry-go-round ul{
    height: 100%;
}
.merry-go-round ul li{
    position: absolute;
    z-index: 0;
}
.merry-go-round ul img{
    width: 100%;
}
.merry-go-round span {
    position: absolute;
    z-index: 3;
    width: 550px;
    top: 0;
    color: #666666;
    font: 50px/400px "Consolas";
    height: 100%;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s;
    user-select: none;
}
.merry-go-round:hover span {
    opacity: 1;
}
.merry-go-round .merry-left-arrow {
    text-align: left;
    left: -50px;
}
.merry-go-round .merry-right-arrow {
    text-align: right;
    right: -50px;
}

/*欢迎语*/
.welcome {
    text-align: center;
    padding: 100px 0;
}

.welcome h3 {
    font-size: 18px;
    line-height: 50px;
    font-weight: bold;
}

.welcome p {
    font-size: 16px;
    line-height: 30px;
}